Home / 11,729.60-16,186.24-6,424.30

Finding the Fourth Proportional to 11,729.60, 16,186.24 and 6,424.30

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Solution

The fourth proportional to 11,729.60, 16,186.24 and 6,424.30 is: 8,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.60 : 16,186.24 = 6,424.30 : x
  2. Step 2: Convert to fraction form
    11,729.60/16,186.24 = 6,424.30/x
  3. Step 3: Cross multiply
    11,729.60x = 16,186.24 × 6,424.30
  4. Step 4: Simplify right side
    11,729.60x = 103,985,261.63
  5. Step 5: Solve for x
    x = 103,985,261.63/11,729.60
  6. Step 6: Final answer
    x = 8,865.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.